Castro vs Theodore

Baby Name Comparison — 2026

Castro

Boy #17,549 Most Popular 2 Syllables

Meaning

"castle, fortress"

Origin: Latin

Cultural Roots

Spanish Portuguese Latin American

Quick Stats

Popularity Rank
#17,549
Total SSA Count
6
Syllables
2
Formality
Moderate
Nicknames
Cas, Caz

Playground Safety Score

✓ All Clear
Full profile for Castro →

Popularity Comparison

Castro Rank #17,549
Theodore Rank #4

Theodore is more popular, ranked #4 vs #17549 for Castro.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Castro ___

  • Castro Luis
  • Castro Miguel
  • Castro Antonio
  • Castro Rafael
  • Castro Emilio

Theodore ___

  • Theodore James
  • Theodore William
  • Theodore Alexander
  • Theodore John
  • Theodore Henry
  • Theodore Arthur

Sibling Name Ideas

Names that pair well as siblings.

If you choose Castro

Diego Mateo Isabella Valentina

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Castro or Theodore more popular?

Theodore is more popular, ranked #4 compared to Castro at #17549 in the United States.

What do Castro and Theodore mean?

Castro means "castle, fortress" (Latin origin). Theodore means "divine gift" (Greek origin).

Are Castro and Theodore boy or girl names?

Castro is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

Theodore vs Castro Castro vs Madaleno Castro vs Ensley Castro vs Demetricus Castro vs Atlas
← Full profile: Castro ← Full profile: Theodore Browse all baby names